Cylindrical sieving and composting device and a method using the device

ABSTRACT

Method of continuous treatment and purification of biologically decomposable waste and liquid in a rotatably elongated perforated cylinder longitudinally divided into a dewatering and wet composting unit, a central dewatering unit and a dry composting unit. The perforated cylinder is surrounded by an envelope for collecting liquid wastes which are treated by oxygenated filter units in communication with the envelope structure. The device also includes a hollow perforated shaft within the cylinder for supplying oxygen to the interior of the cylinder and for rotating the cylinder.

THE BACKGROUND OF THE INVENTION

The present invention relates to an apparatus which by integratingdewatering/sludge separation, the purification of liquid and acomposting process of the solid separated fraction such as the sludgefrom waste water provides a system of purification and recycling, sayapplicable to the waste water of a one family house, block of flats orcluster of houses (terraced houses, ecological building, small villagesetc.) where a common waste water pipe is laid to the above describedapparatus for the treatment and purification of waste water before beinginfiltrated, resorbed or being led directly to a recipient.

The outflowing water from the apparatus is free from heavy metals,nutrients, virus, pathogenic organisms, BOD/TOD, bacteria etc., andtherefore can be infiltrated without a slurry (sludge) separator,distribution pipes, distribution tank and subsoil filter.

The system can also be used for other purposes of purification whereorganic matter is dissolved in a liquid phase and where you as wellrecycle the biological substance from the obtained compost fraction.

SUMMARY OF THE INVENTION

The said described apparatus promotes recycling of nutrients in forexample waste water (N,P,K etc) by obtaining a compost fraction fromwaste water sludge etc., and purifying the outflowing water effectivelyby a gradual filtration through specifically arranged and designed stepsof filters for the purification process.

Dewatering occurs in the said apparatus by a step by step adjusteddewatering device according to the particle size of the solid fraction.

Thanks to the construction of the apparatus and the process there it canbe installed in the subsoil, basement, built into a separate building orbeing dug down into the ground. The final step of filtration can beinstalled into the ground at a lower level than the apparatus itself.

With a local solution close to the source more conscious consumers andproducers of waste will be the result of it all, and thereby moreeffective, cleaner, renewed and recycled waste fractions for theindividual and for society.

As for the local society with an option to make use of human urine,especially concerning the collection, storing and transportation to theconsumer a separation of the urine and preferably of the grey water(from bathing, shower, washing etc.,) can be carried through in orderfor the said apparatus to purify toilet waste water only.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a first embodiment of a system according to the invention.

FIGS. 2-4 show the details of the shaking plate structure used withinthe system.

FIG. 5 shows a second embodiment of a system according to the invention.

Technical effects of the apparatus on society, enviroment and individualare as follows:

1. The process is not disturbed by surface water and makes a localtreatment of surface-water possible in for example sub surface filters,wells, ponds, wetlands etc.

2. The process is not affected by fluctuations of the temperature(seasons, day and night).

3. The process is not affected by changes of waste water flow during 24hours thanks to the separation into process chambers where for exampledewatering takes place in the first chamber (4) at low rates of flow andin the other chambers (5-6) at higher rates of flow. Some degree ofliquid composting also takes place in the process chambers (4-6) duringhours of a low rate of flow.

4. A good sanitation owing to the liquid composting process and to thedry composting process during a relatively extended retention time ofthe solids with high temperatures (50-60 degrees Celsius). These effectsof sanitation are more difficult to obtain in liquid composting only,three-compartment septic tanks and open settling basins of purifyingplants during seasonal changes.

5. Intermittent flows of waste water also provide fluctuating access ofnutrients for the microorganisms. These circumstances affect a largenumber of bacteria populations so that they during a certain period oftime, when lacking of for example phosphorus, are capable of buildinginto the cell a larger amount of phosphorus than normally; that is whenlarger supplies are available at such occasion as the fluctuating flowsof household waste water.

In the biological film generated in the filters (54,58) with so calledtrickling filter material as well as in the micropores, phosphorus isstored so that the population of bacteria can multiply even during lowflows of nutritious waste water. The similar effects are likely to takeplace in the rest of the filters.

6. With a filter structure out of biological material (filter 57 etc.)also a decomposition and sorption of nitrogen, phosphorus etc. willoccur.

Such filters may be recycled to the composing phase of the apparatus.

7. Filters with a specific construction adjusted for specificsubstances, such as heavy metals can be made to be inhabited by heavymetal eating microorganisms or made to adsorbe the said substancephysically or chemically. In the latter case the filter is constructedso that it can be safely dumped.

8. By having a filtration technique adjusted to differentsubstances/bacteria the specific substance is made to be adsorbed to thefilter or decomposed by bacteria in order for these substances to berenewed or safely disposed of.

9. The processes can effectively be checked up on and supervised(temperature, filtration capacity, sludge separation capacity etc.).

10. The processes are selfcontained, i.e. minor pollution load upon air,water and ground from pathogenic organisms, virus, bacteria, heavymetals, nutrients etc.

The apparatus is capable, by means of its different devices of processenclosed in a compact envelope (devices of dewatering, composting,filtration etc.), easily to be equipped with a heat exchanging of theexhaust air/recirculated air heat and be equipped with a biologicalfilter in the exhaust air to minimize odours and the spreading ofair-born microorganisms.

11. A system adjusted to decentralized, small scale waste watertreatment, where the structure of the ground, topography, level ofground water, area available for infiltration etc. are not fitted forother conventional solutions, like infiltration into ground,sandfilters, reed infiltration beds etc.

12. A system where three-compartment septic tanks,infiltration pipes,distribution tank, filtermaterial (sand, pebbles etc.) will not beneeded in order to obtain an acceptable level of water purification andan acceptable status of the compost fraction.

13. A method of treating sludge which reduces the contents of heavymetals, pathogenic organisms, parasitic ova, maggots, plant diseases andwhich increases the contents of micro and macro nutrients of the finalcompost fraction. These facts make household waste water sludge easierto market and to be used within the decentralized society and to achievean enhanced recirculation of nutrients and humic substances in societyas a whole.

14. A reduced transport of sludge to purifying plants; the processes ofwhich are spoiled by intermittent supplies of sludge and a reducednumber of vehicles with diesel engines for the suction of sludge tanksand three-compartment septic tanks and thereby a reduced necessity toenlarge and alter the structure of the purifying plant in order tohandle this.

The effects of the technical processes of the apparatus are as follows:

1. High temperatures of the composting phase (liquid and dry composting)promotes the sanitation and the microbiological activity.

2. Water soluble metal ions move along with the dewatered fraction tothe filter units to be decomposed/sorbed.

3. By a gradual dewatering, adjusted to the size of the solid fractiondissolved in the liquid, an effective separation of the sludge is done.In the different chambers sedimentation to a certain degree is achievedand thereafter a dewatering through the perforated cylinder (A1) and bymeans of the feeding screw with a cone (unit A2) and by means of ashaking plate (51). In the latter the solid and the liquid fraction areseparated by sedimentation,separation in a perforated plate and byshaking and the sludge is moved forward to the filter unit (F1-57)

4. In the filter units with so called trickling filter material (54,58)the microorganisms are made to reduce the biological substance (the socalled; BOD/TOC).

The consequence of this will be that in the nextcoming filter step thewater has become more or less free from particles which enhances thepossibilities of separation and purification of the water from othersubstances; for example heavy metals in these filtersteps.

5. With less BOD/TOC the possibilities of survival of the non desireablemicroorganisms (parasitic ova, bacteria, plant diseases etc.) arereduced. In particular virus living in water can not have an access to ahost to sponge on.

6. The filter material of the filter units can in order to obtaindifferent effects of purification of the outflowing water.

Filter unit (F1) is removed torwards the front (at 61). Filter unit (F2)is removed torwards the back (at 60) and filter unit (F3) is removed bya lifting of the apparatus by means of adjustable legs. The latter (F3)filter step is a final purification step which can be equipped withvarying filter material according to the purification required. Thisfilter step can be installed into ground or at a lower level than therest of the apparatus.

7. By separating the units of dewatering and composting (dry composting)a more appropiate content of dry matter is obtained, a certain degree ofheat is stored in the solid fraction and more undisturbed enviroment forthe microorganisms and their biological processes (flows of water do notinterrupt).

Fluctuations of the Ph-value do not disturb the process. An effectiveoxygenation of both the composting and the dewatering/liquid compostingtakes place, oxygen is dissolved in the water and is carried along to,say, the filter with the trickling filter media (54) and an appropiatestirring takes place in unit (K1) in the two process chambers.

8. Oxygenation with two separate systems can easily be adjusted to thelevels required in the processes. Favorably two fans can be used andwhen required being regulated as to the number of revolutions and flow.

9. The feeding screw at the inlet of, say, waste water (3) render thefeeding at any possible lower rates of flow more efficiency and whenusing a water flushing toilet a so called low flushing toilet can easilybe installed supported by the feeding and pumping functions of thescrew. It also assists during major fluctuations of flow during 24hours.

10. The screw in the dewatering unit (A2) transports the solid fractionup against the cone (9) which momentarily make a stop for the sludgeagainst the perforated pipe with an envelope (7) and effectivelydewaters the solid fraction. In this unit (A2) the pitch of the screwand size of the screw and shape of the cone are adjustable according tothe specific requirement of dewatering. Owing to this function thecontent of dry matter of the substance to be composed in (K1) ispossible to optimize/adjust.

11. The longitudinal slits (14) in unit (A1) collect the dewateredfraction in between. The number of slits can vary according to therequirements (for example 2-4). These slits also effectively convey thewater along the whole of the perforated area of the cylinder (the sizeof which is relatively large owing to the area of the geometry of thecylinder: The area=2*π* the radius* the length of the cylinder) andtransports the separated solid fraction forwards by the slightinclination of the apparatus--by an elevation of the front legs and byletting the water flow in the same direction bringing the solid fractionup against the shovels (15) which effectively feeds the fraction throughthe inlet of the reinforcement disc (26-28) and likewise (35) in unit(K1). The said shovels in unit (15) in unit (A1) and 16/16b in unit (K1)also has a collecting function of the concentrated sludge.

12. The final compost has undergone a sanitation and initialmineralization in unit (K1). Likewise is true for the solid fractionfrom the dewatering of the shaking plate (51) which is put into thefilter (57). The compost fraction is evacuated from the apparatus inpipe (13) in order to obtain further maturity in a separate containeretc. and will not constitute a sanitary hazard nor attract rats etc.

This system brings about the fact that there is no need of supervisingthe running of the apparatus at frequent intervals since the compost iscollected in an external container in a safe way and is possible tosupervise there.

13. By the effects of the above described functions/technical devices itis evident that this apparatus makes an effective treatment andpurification of for example waste water in an automized and continuousprocess with few interruptions of process/a process easy to superviseand control.

14. The construction and integration of the dewatering units, filterunits and composting units and the fact that they function together in acontinuous and automatic running of the apparatus constitutes anoptimization of the effects of the said invention in a technical andsocial perspective comparing to the state of the art within this field.

15. The said apparatus achieves its technical effect and technicalinvention by the above described integration and adjustment of amechanical and microbiological reduction of BOD/TOC to a desireablenecessity of a reduced content of particles in the water phase in orderto optimize the killing of virus and bacteria and make a selectivepurification in the subsequent steps of filter from specific substances;such as heavy metals and in order for each step of filter to achieve anoptimal separation of specific substances like bacteria. The mechanicaldewatering process (by sedimentation, sieving, shaking etc) makes up theconditions of the filter units to be able to optimize their functions(for example filter 54-57) during which the smaller particles aredecomposed as to their size by the microorganisms.

The mechanical separation makes it possible for the composting phase tofunction optimally (higher content of dry materia, reduced volumes etc)and for the microorganisms in the process to obtain optimal conditions(an atomization also takes place in the screw (8) and in the cone (9)because of a grating effect there; This unit may also function as agrinding device, the effect of which on the other hand reduces thevolume of this fraction and increases the flow speed of for waste waterthrough the apparatus whereby the capacity of treatment of the apparatusincreases.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

At the treatment of, say, waste water (feces, flush water and possibleurine and grey water) the water flows into the pipe (1) to be ledthrough and pumped through a pipe with an envelope (2) by a screw (3) afirst to chamber of a rotatable perforated aglinder. In this chamber thesewage water is distributed across the whole area by slits (14) thatextends longitudinally in the cylinder.

A dewatering process occurs through the perforated cylinder all acrossthe whole of its area down to a shaking plate (51). At larger volumes ofwater than can be contained in the chamber (4) the water flows over tothe chamber (5). By a centered position of the reinforcement discs(26-28) a sedimentation takes place before the flowing over andmeanwhile a dewatering through the perforated cylinder. The slits (14)also collect the dewatered fraction against its edges during the slowrotation of the cylinder (continuous running of the apparatus). Owing tothe inclination of the apparatus (elevation of the front legs; and thedirection of the flows (water), the solid fraction is being transportedforwards to the inlets of the discs (26-28).

At these inlets there are shovels (15) which collect and bring thesludge through the inlet; by the rotation of the cylinder and thedirection of the flowing water and the inclination of the cylinder.

The shovels at the unit (A2)--28--before the screw (8) etc feeds thesludge to the unit (A2) for further dewatering. During this state of theprocess larger particles/biological matter remain in the unit (A1)whereas smaller particles go with the water down to the shaking plate(51).

Shaking plate (51) consists of a perforated plate with means of sievingthe smaller particles dissolved in water (drawing 1-4). A naturaldrainage of water now takes place through this perforated plate so thatseparated sludge remains on the surface of the plate.

Brushes (48-50) on the outside of the cylinder bring the sludgeoutwardly towards the edges of the shaking plate. By reversing theelectric motor the cylinder is made to rotate in two directions, whichbrings about the sludge to be brought towards both the edges of theshaking plate.

The said plate is fastened to a jointed shaft (66) on the front of theexternal envelope (61) and to a means of attachment (67). The plate alsohas a jointed shaft in the longitudinal direction (71). The plate isfurthermore fastened to an elastic/springy means of attachment (53) atthe sides of the insulating envelope (65). The plate can thus move inits midpart, longitudinally, by elevation-lowering (joint-71-);elevation-lowering across the whole length (joint-66- andelastic/springy means of attachment) so that the sludge is transportedoutwardly--forward--towards a flexible plate (69). Hereby the bending ofthe plate (69) at the touch by peg (68) in the cylinder the sludge ismade to fall down on filter (57).

By rotation of the cylinder the peg (68) touches the plate (69) atconstant intervals. The number of pegs and the distance in betweendetermines the frequency of the removal of separated sludge to filter(57).

The brushes (48-50) also make the shaking plate (51) to be bentdownwards-upwards so that the water and sludge move across the whole ofthe plate out towards the edges then to be transported forwards by meansof the described device.

A flexible plate (52) is made to let the sludge through intermittentlyby brush (50) bending it. It also functions as a stop and collectingplate of the water. Plate (70) functions in the same manner as plate(52).

On the internal side of the front (61) you find a distributing pipe (72)with nozzles for the flushing and cleaning of shaking plate (51) and forthe forward transportation of separated sludge. This flushing can becontrolled mechanically or electronically.

The separated solid fraction is moved by the shovels (15) in the chamber(6) into the dewatering unit (A2) with a screw (8), pipe with anenvelope (7) and a cone (9). The rotation of the screw brings the matterout towards the edges and forward. The shape of the cone (9) makes thesludge to be pressed further against the internal side of the pipe withan envelope (7). Since this pipe is perforated the sludge 1-s furtherdewatered. Passing the top of the cone the matter is further pressedagainst the inner walls of the pipe (7) so that the dewatering isaccentuated.

The liquid phase passes down to the shaking plate (51) obtaining afurther dewatering there.

The liquid phase is now pressed against the plate (10) for furtherdewatering. Here the liquid flows down to the chamber (47) which has aperforation of its cylinder walls so that superfluous water is drainedout towards the filter (57). The solid fraction undergoes a compostingphase in the said chamber (47) and in the chamber (11). When the matterreaches the hatch (12) it is evacuated through pipe (13) to an externalunit of storage.

Plate (10) also makes the dewatering and disposal of the solid fractionto be carried through within a limited area where an increasing numberof holes can be made for a dewatering purpose.

Filter (54, 58) have so called trickling filter material with a largeinternal and external area for the microbiological decomposing ofTOC/BOD. Here you find a liquid phase with minor particles only, thatpromote the work of the microorganisms in the micropores and on thesurface of the material. There are water and nutrients for them here.The oxygen supply takes place beneath the filters in unit (41), the airof which is blown in pipe (40). Air is then led to unit (44) for theoxygen supply of filter (57) and to unit (43) for the oxygen supply offilter (58).

By means of a pipe in the center of the apparatus (45) the exhaust airis ventilated in order for an effective ventilation of carbon dioxide,vapour and other gases to be done. Beneath filter (57) there is aperforated plate for the distribution of water from unit (41)--Thecollecting and oxygen supply during the water phase takes place in thesame location of installation. The distance between filter (57) and theplate; the space required for the flow of water at (44) is adjusted tothe volume desired to pass there.

The filter unit (59) is removable by the elevation of the apparatus bymeans of adjustable wheels and by moving the apparatus in any direction.Via (64) the unit is removed. This filter constitutes a final step ofpurification and may be supplied with varying filter material accordingto the specific requirements of purification and be installed into thebasement, the ground etc or removed completely.

The oxygen supply of the dewatering units (A1 and A2) is done from thedirection of the front of the apparatus (61) towards unit (A2) and has astop in the shaft/ventilation duct (18) at (19).

The air is pressed out from the shaft (18) into each chamber (4-6) andinto unit (A2) through holes in the pipe (18). The excess pressure makesthe water not to be pressed into the pipe. The feed pipe (17) isconnected to a fan, possible to regulate as to revolutions and flows.

Unit (K1) for the composting process has its oxygen supply from the backof the apparatus (60) via a pipe (18) with a stop at (19). Here as wellthe oxygen supply is done by air pressed through holes in the shaft/duct(18). A fan presses the air and when required it can be regulated forthe adjustment of the airflow to the process.

Further oxygen supply takes place through the ducts (23) with the samefan. Nozzles blow air into the ducts (23) that extend against theperiphery of the cylinder.

The bearing (24) and the bearing (38) are devices for the rotation ofthe shaft (18). The bearings (32,33,35,36) lock the cylinder to theshaft (18) and are integrated in the plates (26,27,30,31).

The bearing (34) attaches the plate (10) to the shaft (18) and mayrotate with it or being attached to the pipe with an envelope (7) andthus being journalled in a bearing against the shaft (18).

The pipe with an envelope (7) is attached to the roof of the envelope ofthe apparatus at (45).

In a second embodiment shown in FIG. 5, the dewatering unit A2 can beconstructed with a perforated cylinder (73), which is removeable andchangeable and connects the dewatering unit (A1) and the composting unit(K1). By the rotation of the shaft (18) the perforated cylinder (73) isalso caused to rotate, during which rotation a dewatering will occurthrough the holes, forming part of the wall of the cylinder.

The solid fraction is transported by the inclination of the entiredevice towards the shovels (74) and a sealing plate (29), in the saiddesign performed as a terminal plate of the unit (K1-cylinder-) with acenter hole.

The shovels (74) collect and feed the solid fraction forward throughthis center hole for a further dewatering against the plate (10) anddosing with the same plate (10) to the composting unit (K1-chamber 47-).

The further process and process devices are identical with the firstdesign.

By the said design the perforated cylinder can be changed according tothe demand of dewatering (the type of material: the dry substance, theviscosity etc.). That is by a variation of the number of the holes anddiameter of the holes of the perforated cylinder a varying degree ofdewatering is achieved.

I claim:
 1. A method for continuously treating and purifyingbiologically decomposable solid and liquid waste material in a rotatablyelongate perforated cylinder having a first, front end wall and asecond, back end wall, said cylinder divided into a front-most combineddewatering and wet composting unit, a central dewatering unit, and a drycomposting unit, said dry composting unit including a plurality ofspaced ducts formed on an inner periphery thereof, an envelopesurrounding said perforated cylinder, said envelope having a front andback end wall corresponding to said end walls of said cylinder, meansfor feeding said biologically decomposable solid and liquid wastes intosaid cylinder through said first end wall, a rotatable, elongate, hollowshaft having a plurality of circumferentially disposed holes along thelength thereof, said shaft centrally supported within said cylinder andattached to said cylinder so as to cause rotation of said cylinder upona rotation of said shaft, said shaft extending beyond said front andback end walls of said cylinder and said envelope, and a plurality offilter units for receiving said liquid waste displaced out of saidperforations of each of said units of said cylinder, comprising thesteps of:feeding said solid and liquid wastes into said cylinder;progressively dewatering said waste within said front-most and centralunits by allowing said liquid waste to drain out of said perforations insaid cylinder, thereby forming a collection of sedimentated solidwastes; passing said collection of sedimentated solid wastes from saidfront-most unit to said central unit and further dewatering said solidwastes; simultaneously oxygenating said front-most and central unitsduring said dewatering; simultaneously collecting said liquid wastesfrom said units comprising said cylinder; passing said solid wastes fromsaid central unit to said dry composting unit; and filtering saidcollected liquid wastes in a collection of filter units andsimultaneously oxygenating said filter units.
 2. The method according toclaim 1, wherein the collecting of said liquid wastes comprises thefurther step of providing a perforated shaking plate in closeapproximation below said cylinder, said shaking plate having a pair ofsides and a mid-part, said sides attached to respective sides of saidenvelope by springed hinges, said mid-point provided with alongitudinally extending hinge.
 3. The method of claim 1, whereindewatering within said central unit comprises passing said solid wastesthrough said central unit by a screw feeder attached to said a portionof said shaft extending within said central unit, and squeezing saidsolid waste between said screw feeder and said envelope, wherein saidscrew feeder further includes a cone attached at an end thereof tofurther squeeze said solid wastes between said cone and said envelope,said envelope being in close proximity to said screw feeder and providedwith perforations for allowing dewatered liquids to be passedtherethrough.
 4. The method of claim 3, further including the step ofsecuring a plate on said shaft, said plate disposed behind an entrancewall to said dry composting unit and in close proximity to said cone,such that said solid waste is further dewatered by squeezing said solidwaste between said cone and said plate.
 5. The method of claim 3,further including the step of securing a plate on said shaft, said platedisposed behind an entrance wall to said dry composting unit, such thatsaid solid waste is further dewatered by squeezing said solid wastebetween said plate and wall.
 6. The method of claim 1, whereindewatering within said central unit comprises passing said solid wastesthrough said central unit, wherein said central unit has a reducedcylindrical diameter, such that said solid waste is squeezed into saidcentral unit, said reduced diameter cylinder provided with perforationsfor allowing dewatered liquids to pass therethrough.
 7. The method ofclaim 1, wherein said solid waste is continuously and automaticallyadvanced through said cylinder from said front end to said back end andis automatically discharged through a pipe, and wherein the liquidwastes continuously and automatically flow through said filter units andare automatically evacuated through a pipe.
 8. The method of claim 1,wherein the filters successively receive a liquid waste having acontinuously diminishing number of dissolved particles therein whenflowing from one filter unit to another.
 9. A device for continuouslytreating and purifying biologically decomposable solid and liquidwastes, comprising:a rotatably elongate perforated cylinder having afirst, front end wall and a second, back end wall, said cylinder dividedinto a front-most combined dewatering and wet composting unit, a centraldewatering unit, and a dry composting unit, said dry composting unitincluding a plurality of spaced ducts formed on an inner peripherythereof; an envelope surrounding said perforated cylinder, said envelopehaving a front and back end wall corresponding to said end walls of saidcylinder; means for feeding said biologically decomposable solid andliquid wastes into said cylinder through said first end wall; arotatable, elongate, hollow shaft having a plurality ofcircumferentially disposed holes along the length thereof, said shaftcentrally supported within said cylinder and attached to said cylinderso as to cause rotation of said cylinder upon a rotation of said shaft,said shaft extending beyond said front and back end walls of saidcylinder and said envelope; a plurality of filter units for receivingsaid liquid waste displaced out of said perforations of each of saidunits of said cylinder; and means for supplying air to said shaft andsaid filter units for oxygenating each of said units of said cylinderand each of said filter units.
 10. The device of claim 9, wherein saidshaft further includes a stop, an air distributing ring, and acombination feed screw and dewatering cone, said stop inserted withinsaid shaft interior to form a front and back section of said shaft, saidair distributing ring attached about said shaft with a bearing to formsaid second end wall of said cylinder, said combination feed screw anddewatering cone attached to said shaft within said dewatering unit ofsaid cylinder, said air distribution ring including nozzles thereaboutwhich communicate with said plurality of spaced ducts located withinsaid dry composting unit, wherein air fed into said dry composting unitenters through said back section of said shaft and said air distributingring.
 11. The device according to claim 10, further including a shakingplate disposed in close approximation below said perforated cylinder forreceiving a dissolved fraction of solid wastes, said perforations onsaid cylinder comprised of longitudinal slits, wherein liquid wastecontained within each of said-units of said cylinder is communicatedthrough said slits and deposited upon said shaking plate.
 12. The filterdevice according to claim 9, wherein said plurality of filter units iscomprised of:i.) a first filter layer consisting of a non-decomposabletrickling filter material for the purpose of purifying said liquid wasteand decomposing of any biological substance in said liquid; ii.) asecond filter layer arranged below said first layer and consisting ofone of a biological and synthetic material for the removal of a specificcomponent in said liquid waste; iii.) a third filter layer arrangedbelow said second filter layer, said third layer consisting of said samematerial as said second layer; iv.) a fourth filter layer arrangedalongside said second and third filter layers, said fourth layerconsisting of said same material as said second filter layer, saidfourth filter for purifying said liquid waste gathered from said shakingplate, said dewatering unit and said combination dewatering and wetcomposting unit; v.) a fifth filter layer disposed below said fourthfilter layer, said fifth layer consisting of said same filter materialas said first filter layer; and vi.) a sixth filter layer disposed belowsaid fifth filter layer, said sixth filter layer consisting of said samefilter material as said first filter layer.
 13. The device according toclaim 9, wherein said means for supplying air to said shaft comprises afan coupled to a first feed pipe at said front of said cylinder and saidsame fan connected to a second feed pipe at said back of said cylinder,said first and second feed pipes surrounding said shaft so as to be incommunication therewith, said means for supplying air to said filterunits comprised of a second fan connected to a inlet pipe, said inletpipe connected to a first unit pipe disposed below said second and thirdfilter units, said first unit pipe including an air distributing pipeextending therefrom, said air distributing pipe connected to a secondunit pipe disposed between said fifth and sixth filter layers, said airdistributing pipe and second unit pipe in communication with said airbeing supplied into said first unit pipe.